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Phase-fired control arrangement and method

a phase-fired control and arrangement technology, applied in the direction of variable inductance, inductance, electric variable regulation, etc., can solve the problem of adding costs in terms of the joining technology for the electrical connection of individual control elements, and achieve the effect of reducing the precision of the ammeter

Inactive Publication Date: 2015-04-21
SITEC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technology described in this patent allows for more efficient control of electrical switching elements by connecting them to a common control cable with its own controller. This controller generates control signals based on the input values set by a superior control unit. The main benefit of this technology is that it enables more precise and efficient control of multiple electrical switching elements with a single control unit.

Problems solved by technology

This additionally results in added costs in terms of the joining technology for the electrical connection of individual control elements that are quite high for the controllers and / or control units, as well as testing costs for a function control while manufacturing the devices.

Method used

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Embodiment Construction

[0034]The analysis of the circuit arrangement according to FIG. 1 shows the drawback of the existing state of the technology, which is that one or maximum two switches of a phase-fired control are simultaneously being used. Consequently, at least two controllers are locked in the event of, for example, a phase-fired control consisting of four controllers. Typically, the controllers 2, which control the controllable electrical switching elements 3 like thyristors or Triacs 3, are controlled by a common control unit 9, for example, a PLC (programmable logic controller).

[0035]The solution as per the invention according to FIG. 2 proposes using only a control unit 9 (PLC) and a common controller 20 for all controllable electrical switching elements 3 of the phase-fired control. The control unit 9 (SPS) only provides to the controller 2 the target value for the predetermined electric parameter to be controlled. On the other hand, according to the existing state of the technology, a contr...

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Abstract

A method and arrangement for phase-fired control is provided, in which all controllable electric switching elements are linked by a common controller that has a first input for a first control signal. A set point value is pre-defined as a first input variable and assigned to a device for controlling the controllable electric switching elements. Current flowing through each switching element is measured and transmitted to the device for controlling the switching elements as a respective second input variable. The current value of the voltage in the load is measured and transmitted to the device for controlling the switching elements as a third input variable. The device for controlling the switching elements controls all switching elements in a targeted manner by use of the first, second and third input variables. A maximum of two switching elements are active at any one time.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a national stage filing under section 371 of International Application No. PCT / EP2009 / 058674 filed on Jul. 8, 2009, and claims priority of German application No. 10 2008 060 907.2 filed on Dec. 9, 2008, the entire disclosure of these applications being hereby incorporated herein by reference.BACKGROUND ART[0002]The invention relates to an arrangement and procedure for phase-fired control, particularly for thermal engineering, with a transformer that has a primary and a secondary coil for generating voltage, where the secondary coil has an end and at least two taps, where a controllable electrical switching element is connected to each tap. The controllable electrical switching element is connected to a first connection of a load and a second connection of the load is connected to the end of the secondary coil.[0003]The invention also relates to a phase-fired control procedure where the set value is specified for an ele...

Claims

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Application Information

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IPC IPC(8): H02M5/12H02M5/257G05F1/20H05B39/08
CPCH02M5/257H05B39/08H02M5/12G05F1/20H05B47/18
Inventor VOLLMAR, WILFRIED
Owner SITEC
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